Add your lights if your tree is not already prelit. Then lay a cloth or trash bags under the tree to catch any snow fall out during the application process.
Starting at the top of your tree spray down one section about 2ft by 2ft with water.
Sift the snow flock starting at the top of the tree and spray it as it’s landing on the branches
Once you have finished applying the flock how you want it on your tree you’re going to go over it with another coat of water. Just lightly mist the spray bottle around the whole tree. Wait until its completely dried and give a few branches a slight shake. If you have any snow fall off, add another light coat of water until all of the flock is secure.